Honeywell R0512 用户手册

ALARM HANDLING

EXCEL 50/100/500/600/800

EN2B-0092GE51 R0512

Operational status

All datapoints can be switched from the 'automatic' to the 'manual' operational
mode. Each time the operating mode is changed, irrespective of the direction
involved, a critical alarm signal is generated. Both alarm signal texts are
preprogrammed and require no input from the user.

Remote (V2.0.x) (not with Excel 100C)

If a manual override control is changed on a Distributed I/O module, an alarm
“overr.switch_manu” or “overr.switch_auto” is generated and the “manu” value is
transmitted.

Alarm suppression in manual mode

Under controller firmware 2.06.02 and higher, the following datapoint alarms can be
suppressed for as long as the corresponding datapoints are in the 'manual override'
mode:

•

min. and max. limit alarms (of analog datapoints, only);

•

status alarms (of digital datapoints, only).

This alarm suppression is activated during CARE engineering by inserting the "at"
sign ("@") at the beginning of the descriptor text of the pseudo datapoint "Startup".

Benefits:
As long as this alarm suppression is in effect, the repair or replacement of defective
and/or malfunctioning (flickering) inputs (resulting e.g. from sensor breakage,
sensor short-circuiting, defective alarm switches, etc.) can be performed while the
corresponding datapoint is in the "manual override" mode.

NOTE:

Only when using XFI 2.1.0 SIM1 will the event behavior and visualization
behavior be identical to that of Honeywell Deltanet controllers.

System Alarms

Operating errors that occur in a control unit or during communication with other
Excel 50/100/500/600/800 units are recognized and displayed by the computer
module. These alarm signals can relate, for example, to a defective module, the
need to change the buffer battery (data protection), or the presence of one digital
output module too many (maximum 10). These alarm signal texts are
preprogrammed. They are always critical alarms.

Table 20. System alarms

Alarm
no.

alarm text
English)

cond.
code #

cause/reason

AI Module Defect

Maximum conversion time was exceeded while testing ADC (defect on an AI card).

AI 0 Volt Error

While measuring GND voltage on an AI card, one value greater than 0.5 V was measured
(AI card defect).

AI 5 Volt Failure

While measuring the 5-V reference voltage on an AI card, one value greater than 5 V or
smaller than 4.5 V was measured (AI card defect or incorrect power supply of AI card).

MAX 2 alarm